Add 81/4 and 7/28
1st number: 20 1/4, 2nd number: 7/28
81/4 + 7/28 is 41/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 28 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
81/4 = 81 × 7/4 × 7 = 567/28 - Likewise, for the 2nd fraction, since 28 × 1 = 28,
7/28 = 7 × 1/28 × 1 = 7/28 - Add the two like fractions:
567/28 + 7/28 = 567 + 7/28 = 574/28 - 574/28 simplified gives 41/2
- So, 81/4 + 7/28 = 41/2
In mixed form: 201/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/4+14/28 81/8+7/28 81/4+7/56 81/4+21/28 81/12+7/28 81/4+7/84 81/4+35/28 81/20+7/28 81/4+49/28 81/28+7/28